plain

apparent appreciable artless audible austere bald bare-bones blank blatant bold bolder broad broader broadest candid certain clean cleanest clear clear-cut clearer clearest common commonest comprehensible conspicuous conventional crashing crystal clear definite definitive demonstrative direct discernible distinct dowdy down and dirty downright dry dull dull duller duller easier easiest easy elementary everyday evident expanse expanses explicit express familiar featureless flat folksy formulaic forthright frank frumpish frumpy genuine grassland gross hard harder homely homely homespun honest household ignoble inarguable inconspicuous incontestable ingenuous insipid intelligible knowable known legible level level levels literal low lucid manifest matter-of-fact meadow meadows meek mere mesa modest more apparent more evident more familiar more known more legible more modest more natural more natural more obvious more open more open more readable more self evident more self evident more self-evident more self-evident more self-explanatory more self-explanatory more self explanatory more self explanatory more selfevident more selfevident more selfexplanatory more selfexplanatory more understandable more understandable more undisputable more visible most apparent most certain most known most noticeable most obvious most restrained most self evident most self evident most self-evident most self-evident most self explanatory most self explanatory most self-explanatory most self-explanatory most selfevident most selfevident most selfexplanatory most selfexplanatory most undisputable mousy naive naked natural natural noticeable obvious open open open-and-shut open and shut/open-and-shut openhearted ordinary outspoken overt palpable patent pellucid perspicuous plainspoken plane plateau plateaus point-blank poor prairie prairies prima facie public pure purest quiet quieter quietest readable restrained round routine rudimental rustic rustic savanna savanna/savannah savannahs savannas savannas see-through seeable self-evident self-evident/self-explanatory self-explanatory sensory simple simple simple simpler simpler simpler sincere sincerest slender slenderer slenderest smooth smoother smoothest sober spartan stark steppe straight straight straight-from-the-shoulder straight-out straight-shooting straightforward straightforward table tangible tasteless transparent transparent ugly unaffected unambiguous unappealing unassailable unassuming unattractive unblended unbounded unconcealed unconspicuous understandable understandable undiluted undiluted undisputable undistinguished unembellished unembellished unequivocal unexceptional unexciting unfinished unmistakable unnoticeable unostentatious unpretentious unrelieved unremarkable unsophisticated unsubtle unvarying used to usual valley valleys vanilla very viewable visible well-defined